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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - warn about undefined behaviour if division result is not representable" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24338&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=SamcT9pSv9IJOQM-EOww3COiNnw2VTewb-W4c2IHamI&s=vSwnYkBL1TSRQXa-HbFeMnGloXoc0W1xNB8rGBN_CC0&e=">24338</a>
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<th>Summary</th>
<td>warn about undefined behaviour if division result is not representable
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>davide@freebsd.org
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>If the quotient a/b is not representable, a/b and a%b have undefined behavior.
This is true at least in recent C and I guess it's true in C++ as well
(although I didn't check). It will be useful if clang would warn when this
happen.
Trivial example: INT_MIN % -1</pre>
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